Textile carding machinery



" ,Ma 1 9, 1970 E. 551mm 3,512,217

' TEXTILE GARDING MACHINERY. I

Filed Jan. 10, 1968 zfIz/b Berra W INVENTOR an; M

dgdv I United States Patent 01 iice 3,512,217 Patented May 19, 1970 Int.(:1. D1 /40, 15/82 U.S. Cl. 19-105 1 Claim ABSTRACT OF THE DISCLOSURE Ina textile carding machine there is provided a plurality of verticallyspaced and aligned taker-ins that are grouped in a plurality of pairs. Afeed table, or taker-in grid and a plurality of mote knives cooperatewith each one of the taker-ins. A vacuum channel is positioned directlybelow each of the taker-in grids, the vacuum channel under the grids ofeach pair of taker-ins having a common connection to a remote source ofvacuum. A first and second carrying roller are positioned downstream ofand common to a respective pair of taker-ins and an intermediatecarrying roller is positioned downstream of and common to the first andsecond carrying rollers. There is also provided a main card cylinderassociated with and positioned downstream of the intermediate carryingroller. Revolving flats cooperate with the main card cylinder and adoffer roller is positioned downstream of and in cooperation with themain card cylinder.

This invention relates to a method for producing very high amounts ofcotton or like fifibres card web, with a very high cleaning degree, andto a card engine for carrying such method into practice.

As well known, the yield of carded product depends, in the conventionalcards, on the cleaning degree which is to be attained in same product.Also known is that the yield of a card depends on the efliciency of cardcomponent by which the cleaning of fibres, or better said of fibre webis performed, and that is called usually a takerin, while all otherconventional components of a carding engine, as e.g. the main cylinder,the flats and the workers have all an efiiciency much higher than thatof a taker-in.

It is therefore obvious that, in point of fact, the feed of fibre web tooperating components of a card could be greatly increased over thatheretofore possible in the present stand of technique, and this is justthe main object of this invention, which also aims to ensure a steadysatisfactory cleaning degree of product.

A card for carrying the method according to the invention into practiceis essentially characterized in that it comprises at least twotaker-ins, to each of which a separate fibre web is fed, being suchrollers associated and cooperating with corresponding card web carryingrollers, whereafter the cleaned card web is fed to conventional carddevices.

Should in such a card each taker-in be operated at a rate equal to thatof the single taker-in with which the conventional cards are fitted,then a card throughput (with the usual cleaning degree of web) which isa multiple of that of conventional cards, would be obtained.

An embodiment form of a card, by which the multiple feed cardingprocedure, intended to increase the card throughput, can be carried intopractice, is diagrammatically shown, as a not restrictive example, inthe single figure of accompanying drawing.

The card as shown in same drawing, comprises four conventional taker-ins4, by which the fibre Web is fed to card main cylinder 1, thatcooperates with the conventional revolving flats 2 and with the alsoconventional delivery roller 3, being each of said four units made-up bya taker-in 4, with the related feed table 5, 5, 5", 5" and taker-in grid6 and mote knives 7, 7, 7", 7", all of the already known, conventionaldesign.

A plurality, (e.g. two 44', or three 4-4'-4", or four 4-4-4-4' or more)of said takers-ins, can be provided, according to carding engine sizes,and to potential carding capacity thereof. Four taker-ins 4-4'4"-4"' areprovided in the example as shown in the drawing.

Said taker-ins are suitably positioned, on the carding engine, inrespect of one, or more revolving carrying rollers, by which the fibrewebs Vt, having the conventional cleaning degree, and obtained by theaction of dilferent taker-ins 4, 4 etc., are withdrawn.

Each revolving carrying roller is followed by an intermediate carryingroller 9, by which the fibre web Vt is delivered to card main cylinder 1that cooperates with the revolving flats 2, where the fibre web Vt isconverted into a card web V, which successively, after having been actedupon by the conventional combing and calendering units, is on turnconverted into rovings, that are collected into cans, according to thealready known technique.

When the carding engine is fitted with three, or four taker-ins 4, 4',4" and 4" as shown in the drawing), a third carrying roller 10 similarto rollers 8 and 9 is provided.

Since, owing to installation requirements, said taker ins are to beplaced superposed and vertically aligned, with a convenient spacingtherebetween, a vacuum channel is provided below the taker-in grid 6, 6,'6", 6" of each of said taker-ins, and in communication therewith 11,11', 11", 11" to carry the fly, wastes and foreign bodies out of cardingroom, being such channels connected with a suitable vacuum source.

What I claim is:

1. Apparatus of the class described comprising:

(a) a plurality of vertically spaced and aligned takerins, saidtaker-ins being grouped in a plurality of pairs;

(b) a feed table, a taker-in grid and a plurality of mote knivescooperating with each one of said takerins;

(c) a vacuum channel positioned directly below each of said taker-ingrids, the vacuum channel under the grids of each pair of taker-inshaving a common connection to a remote vacuum source;

(d) a first and second carrying roller positioned downstream of andcommon to a respective pair of takerms;

(e) an intermediate carrying roller positioned downstream of and commonto said first and second carrying rollers;

(f) a main card cylinder associated with and positioned downstream ofsaid intermediate carrying roller;

(g) revolvingiflat's cooperating with said main card FOREIGN PATENTScylinder; and Y 7 I 694,868 -8/1940 Germany. (b) a dofier rollerpositioned downstream of and co- 1 ,445 1849 Great B i i operating withsaid main card cylinder. 971,830 10/1964 Great Britain. 5 1,074,1276/1967 Great Britain. Ref renc Clted 19,332 1900 Great Britain. UNITEDSTATES PATENTS DORSEY NEWTON, Primary Examiner 1,395,877 11/1921Tlllotson 19-105 1,564,669 12/1925 Hagemann 19-105 10 U S C1 X R,

1,759,260 5/1930 Hoffmann 19145.7 19- 107,145,7

UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3 ,512,217 May 19 1970 Ezio Bettoni It is certified that error appears in theabove identified patent and that said Letters Patent are herebycorrected as shown below:

In the heading to the printed specification, line 5, "June 13, 1967"should read January 13, 1967 Signed and sealed this 12th day of January1971.

(SEAL) Attest:

WILLIAM E. SCHUYLER, JR.

Commissioner of Patents Edward M. Fletcher, Jr.

Attesting Officer

